GE Industrial Solutions Entellisys Installation - Manual (Page 71)

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Entellisys Low Voltage Switchgear
Appendix B. Circuit Breaker Rejection Features
General
In general, EntelliGuard breakers of the same type and
rating are interchangeable in their equipment compartments.
Similarly, breakers may be installed into equipment
compartments designed for breakers having lower ratings.
Breakers are intentionally made uninstallable into
compartments for breakers with higher ratings.. To prevent
inserting the wrong type breaker into a drawout
compartment, unique “rejection hardware” is affixed to each
breaker and its compartment. The rejection is accomplished
by tabs or pins on the bottom of the breaker backframe and
tabs or pins on the top of the pan in the equipment
compartment.
Fig. B-1. Breaker-mounted rejection plate
22-inch Wide Compartment
Figure B-1 (EG-08/16/20 breaker family) shows the breaker-
mounted rejection tabs located on the bottom left side of the
backframe.
When a wrong type breaker is inserted into a compartment,
the breaker tabs and equipment pins interfere, preventing
the breaker from rolling into the DISCONNECT position.
Breakers may be interchanged in one direction only.
Specifically:
1. Any EG-08/16/20 breaker can be inserted into an
EGS-08 compartment.
2. An EGX-08, EGH-16, EGS-20 or EGF-20 can be
inserted into an EGH-08 compartment.
3. An EGS-20 or EGF-20 may be inserted into an EGX-
08 or EGH-16 compartment
4. An EGH-16, EGS-20, or EGF-20 may be inserted
into an EGS-16 compartment
5. An EGF-20 may be inserted in an EGS-20
compartment
The rejection hardware prevents the converse of the above.
Figure B-2 shows the rejection pin combinations employed for
the various breaker models and frame sizes.